CS 301 Homework 1- Let Σ = {a, b}. Show that the language [2 marks] L...

CS 301 Homework

1- Let Σ = {a, b}. Show that the language [2 marks]

L =

is not regular.

Expert Solution

venereology answered 1 year ago

1. Prove the language L is not regular, over the alphabet Σ = {a, b}. L...

1. Prove the language L is not regular, over the alphabet Σ = {a, b}. L = { aib2i : i > 0} 2) Prove the language M is not regular, over the alphabet Σ = {a, b}. M = { wwR : w is an element of Σ* i.e. w is any string, and wR means the string w written in reverse}. In other words, language M is even-length palindromes.

Let L ⊆ Σ ∗ and define S(L), the suffix-language of L, as S(L) = {w...

Let L ⊆ Σ ∗ and define S(L), the suffix-language of L, as S(L) = {w ∈ Σ ∗ | x = yw for some x ∈ L, y ∈ Σ ∗ } Show that if L is regular, then S(L) is also regular.

let sigma = {a,b,c}. Use the Pumping Lemma to show that the language L defined below...

let sigma = {a,b,c}. Use the Pumping Lemma to show that the language L defined below is not regular. L={ a^p c(bb)^q : q > p >1}

Let INFINITE PDA = {<M>|M is a PDA and L(M) is an infinite language}. Show that...

Let INFINITE PDA = {<M>|M is a PDA and L(M) is an infinite language}. Show that INFINITE PDA is decidable.

5. (a) Let σ = (1 2 3 4 5 6) in S6. Show that G...

5. (a) Let σ = (1 2 3 4 5 6) in S6. Show that G = {ε, σ, σ^2, σ^3, σ^4, σ^5} is a group using the operation of S6. Is G abelian? How many elements τ of G satisfy τ^2 = ε? τ^3 = ε? ε is the identity permutation. (b) Show that (1 2) is not a product of 3-cycles. Must be written as a proof! (c) If a^4 = 1 and ab = b(a^2) in a...

Let Σ ⊆ P rop(A). Show that Σ|− p iff Σ ∪ {¬p} is unsatisfifiable.

(The “conjugation rewrite lemma”.) Let σ and τ be permutations. (a) Show that if σ maps...

(The “conjugation rewrite lemma”.) Let σ and τ be permutations. (a) Show that if σ maps x to y then στ maps τ(x) to τ(y). (b) Suppose that σ is a product of disjoint cycles. Show that στ has the same cycle structure as σ; indeed, wherever (... x y ...) occurs in σ, (... τ(x) τ(y) ...) occurs in στ.

1. Let a < b. (a) Show that R[a, b] is uncountable

Language: C and comment code please PThreads The goal of this homework is to show an...

Language: C and comment code please PThreads The goal of this homework is to show an understanding of pthreads and C. Assignment: Write a C program to use the bitwise operations with each bitwise operation contained within its own thread. Each thread should take 1 parameter and will only modify global values. First, create global integers x and y, then, in the main function you will read in values for x and y from the user and then create the...

L= {x^a y^b z^c | c=a+b(mod 2)} .Create a DFA and NFA for the language L....

L= {x^a y^b z^c | c=a+b(mod 2)} .Create a DFA and NFA for the language L. Solution and explanation please..

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